CD74HC20MG4 Equivalent & Substitute Parts

Part Overview

The CD74HC20MG4 is a NAND Gate IC with 2 channels and 4 inputs per channel, packaged in a 14-SOIC surface mount configuration. Manufactured by Texas Instruments, this logic component operates across a 2V to 6V supply voltage range and is designed for general-purpose digital logic applications. The part is currently discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications.

Substiute Parts

CD74HC20MG4

Texas InstrumentsIn Stock: 725CD74HC20MG4 Datasheet

Current PartRFQ

CD74HC20M

Harris CorporationIn Stock: 3484CD74HC20M Datasheet

MFR RecommendedRFQ

74HC20D,652

NXP SemiconductorsIn Stock: 8577774HC20D,652 Datasheet

MFR RecommendedRFQ

74HC20D,653

NXP SemiconductorsIn Stock: 382474HC20D,653 Datasheet

MFR RecommendedRFQ

MC74HC20ADG

onsemiIn Stock: 6243MC74HC20ADG Datasheet

MFR RecommendedRFQ

MC74HC20ADR2G

onsemiIn Stock: 3649MC74HC20ADR2G Datasheet

MFR RecommendedRFQ

NLV74HC20ADR2G

onsemiIn Stock: 787NLV74HC20ADR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD74HC20MG4 is determined by strict equivalence across the following critical parameters:

• Logic Type: NAND Gate (2 channels, 4 inputs)
• Package: 14-SOIC surface mount form factor
• Voltage Supply Range: 2V ~ 6V
• Input/Output Logic Levels: Matching threshold specifications
• Operating Temperature Range: -55°C ~ 125°C
• Mounting Type: Surface Mount

Substitute parts must maintain functional and electrical compatibility within these defined parameters. Variations in quiescent current, propagation delay, product status, and compliance certifications do not preclude substitution when the core electrical and mechanical specifications align.

Parameter Comparison

Engineering Selection Recommendations

For new designs and production applications, MC74HC20ADG and MC74HC20ADR2G (onsemi) are the preferred substitutes. Both parts are currently active in production, ROHS3 compliant, and offer improved performance characteristics with lower quiescent current (1 µA vs. 2 µA) and faster propagation delay (15ns vs. 17ns).

The 74HC20D,652 and 74HC20D,653 (NXP Semiconductors) are active alternatives with full functional compatibility. These parts maintain the required 14-SOIC package and voltage specifications.

CD74HC20M (Harris Corporation) and NLV74HC20ADR2G (onsemi) are obsolete parts. While electrically compatible, their discontinued status limits availability for long-term supply chain requirements.

Frequently Asked Questions (FAQ)

Q: Can MC74HC20ADR2G replace CD74HC20MG4 directly? A: Yes. Both parts are 2-channel, 4-input NAND gates in 14-SOIC packages with identical voltage supply ranges (-55°C to 125°C operating temperature). The MC74HC20ADR2G is packaged in Tape & Reel format and is ROHS3 compliant with active product status.

Q: What is the difference between MC74HC20ADG and MC74HC20ADR2G? A: Both parts are electrically identical onsemi NAND gate ICs with the same performance specifications. The primary difference is packaging: MC74HC20ADG is supplied in Tube format, while MC74HC20ADR2G is supplied in Tape & Reel (TR) format. Select based on your assembly process requirements.

Q: Are NXP 74HC20D,652 and 74HC20D,653 interchangeable? A: Yes. Both NXP parts are functionally equivalent 2-channel, 4-input NAND gates in 14-SOIC packages. The primary difference is packaging format (Bulk vs. standard). Both maintain full compatibility with the CD74HC20MG4 specification.

Q: Why is propagation delay different across substitute parts? A: Propagation delay variations (15ns to 23ns at 6V, 50pF load) reflect manufacturing process differences between suppliers. All specified delays remain within acceptable logic circuit timing margins for standard 74HC series applications.

Q: Is the CD74HC20M suitable for new production? A: No. The CD74HC20M is obsolete and RoHS non-compliant. For new designs, select from active alternatives: MC74HC20ADG, MC74HC20ADR2G, 74HC20D,652, or 74HC20D,653.

Q: What does MSL 1 (Unlimited) mean for moisture sensitivity? A: MSL 1 indicates the lowest moisture sensitivity level. These parts require no special moisture control during storage, handling, or assembly, making them suitable for standard manufacturing environments.